Stable functional structure despite high taxonomic variability across fungal communities in soils of old-growth montane forests

doi:10.1186/s40168-023-01650-7

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	Stable functional structure despite high taxonomic variability across fungal communities in soils of old-growth montane forests
	Zeng,Qingchao; Lebreton,Annie; Auer,Lucas; Man,Xiaowu; Jia,Liukun; Wang,Gengshen; Gong,Sai; Lombard,Vincent; Buee,Marc; Wu,Gang; Dai,Yucheng; Yang,Zhuliang; Martin,Francis M.
	2023
发表期刊	MICROBIOME
卷号	11 期号:1 页码:217
摘要	Background Major advances over the past decade in molecular ecology are providing access to soil fungal diversity in forest ecosystems worldwide, but the diverse functions and metabolic capabilities of this microbial community remain largely elusive. We conducted a field survey in montane old-growth broadleaved and conifer forests, to investigate the relationship between soil fungal diversity and functional genetic traits. To assess the extent to which variation in community composition was associated with dominant tree species (oak, spruce, and fir) and environmental variations in the old-growth forests in the Jade Dragon Snow Mountain in Yunnan Province, we applied rDNA metabarcoding. We also assessed fungal gene expression in soil using mRNA sequencing and specifically assessed the expression of genes related to organic matter decomposition and nutrient acquisition in ectomycorrhizal and saprotrophic fungi.Results Our taxonomic profiling revealed striking shifts in the composition of the saprotrophic and ectomycorrhizal guilds among the oak-, fir-, and spruce-dominated forests. The core fungal microbiome comprised only similar to 20% of the total OTUs across all soil samples, although the overlap between conifer-associated communities was substantial. In contrast, seasonality and soil layer explained only a small proportion of the variation in community structure. However, despite their highly variable taxonomic composition, fungal guilds exhibited remarkably similar functional traits for growth-related and core metabolic pathways across forest associations, suggesting ecological redundancy. However, we found that the expression profiles of genes related to polysaccharide and protein degradation and nutrient transport notably varied between and within the fungal guilds, suggesting niche adaptation.Conclusions Overall, our metatranscriptomic analyses revealed the functional potential of soil fungal communities in montane old-growth forests, including a suite of specialized genes and taxa involved in organic matter decomposition. By linking genes to ecological traits, this study provides insights into fungal adaptation strategies to biotic and environmental factors, and sheds light on the importance of understanding functional gene expression patterns in predicting ecosystem functioning.
关键词	Fungal guilds Functional traits Forest soil Metatranscriptomics Organic Matter degradation Yunnan DATABASE SPRUCE
DOI	10.1186/s40168-023-01650-7
WOS记录号	WOS:001083758600001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/74958
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Zeng,Qingchao,Lebreton,Annie,Auer,Lucas,et al. Stable functional structure despite high taxonomic variability across fungal communities in soils of old-growth montane forests[J]. MICROBIOME,2023,11(1):217.
APA	Zeng,Qingchao.,Lebreton,Annie.,Auer,Lucas.,Man,Xiaowu.,Jia,Liukun.,...&Martin,Francis M..(2023).Stable functional structure despite high taxonomic variability across fungal communities in soils of old-growth montane forests.MICROBIOME,11(1),217.
MLA	Zeng,Qingchao,et al."Stable functional structure despite high taxonomic variability across fungal communities in soils of old-growth montane forests".MICROBIOME 11.1(2023):217.

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